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Found 107 results

  1. Hi .I'm thinking of changing my finderscope on my 200p skyliner. Is it possible to fit a skywatcher st80.any information would be helpful to me.
  2. I'm scared I have attained the debilitating Collimation Syndrome ( HClV-1a : Human Collimation Virus strain 1a. - mild/severe). Was out with Calpernia yesterday (ehm..my scope's second name..) and I decided to correct her eyesight..again.. (She's now 11 month's old...her first name is Sky, her surname Watcher, 10" of joy..) I followed my baby's collimation guide (I mean Astrobaby..sorry..) And to my surprise the collicap worked (which I have never tried before) very well... I could see all the six mirror clips on my primary mirror..but it seemed like the clips were not evenly spaced with reference to the side of the secondary mirror's edge. As explained in AstroBaby's guide.. "The photograph to the left shows what the actual view should be like at this stage of the process. Note the three mirror clips are all visible and are all equally close to the edge of the secondary mirror and the secondary is showing round and centred to the focuser tube ( the dark area at the edges of the picture)." (Astrobaby, 19..) source: http://www.astro-baby.com/astro_baby_telescope_help_and_advice.htm. Collimation Guide for Newtonian Reflector Telescopes. I checked with my Cheshire...it showed that (according to the Cheshire) the secondary didn't appear quite cylindrical in the tube. So now I recollimated the whole thing...using my trusted Cheshire...and everything is bang on.. When I insert the colli cap thereafter I can see all the clips, almost all the same size, but still with a slight miscorrection of spacing around the secondary's edge.. Maybe I'm just getting old, and my eyes are tired..
  3. Just a few questions... Would I be right in assuming that there's a telescope made for a dobsonian mount, and then there's all other telescopes, never the twain shall meet (with an EQ mount)? How exactly is a dobsonian telescope attached to the mount? Are dobsonian telescopes always newtonian reflectors? If I have a well supported substantial garden table which is about 3' high and about the same across, what size dobsonian would be usable if just plonked on top of it? I assume they are meant for use on the ground, so it may not be possible to reach the eyepiece if it's stuck right at the top end of the tube, unless it's a particularly small dobsonian (or I'm looking at the horizon, which isn't going to happen from that location). As my usual observing location appears to have a trailer parked on it at the moment, just exploring other possibilities... Thanks for answering my silly questions!
  4. Hi, never posted in the imaging section before but heres a Moon shot taken on a 150p dob with a Nikon D300 at iso 800 1/320 second. Mirror lock up and timer delay. D300 was attached with a 2 x Barlow so had to take a piccie of the bottom and then the top half of the Moon as it was too big ( and no I couldn't have moved back a bit !) and then stitched in photoshop
  5. Hey folks, this is an attempt to image m45 and get the nebulosity of the "seven sisters". 20subs * 30sec on ISO 1600. enjoy, please free to comment and collaborate. theo
  6. Just wondering what peoples thoughts are on the pro's and con's of the different types of mounts out there? Do Dobsonian mounts have issues on non-flat surfaces (like a garden) or can Equatorial mounts ever have issues getting out of line too easily?
  7. I am building a newtonian reflector telescope, and I could use some help. This is my first DIY telescope, so I am pretty unprepared and don't know where to buy some stuff, namely optics. I am planning on going for a 8" aperture, but I can't find a website that sells mirrors. What website or sites has good quality mirrors but isn't to expensive, and what mirror coating is best? All help is appreciated, thank you in advance!
  8. In my struggles with finding someone who wants to head out to the desert to do some late night observing... I have taken to my back yard in LA.... Honestly I know these images are not anything compared to the things that people post here... but I am slowly working on adapting to the living xD And with taking the images with a cellphone camera... lol... I cant really complain... iPhone X Camera, 2x Barlow, 25mm Eyepiece... I know sad attempt... but planning my trip out to the desert for when the real camera gets here! If anyone has any advice for city observing... They would be very appreciated... I know that there is a filter that is designed to try to remove most of the city lights.... but I have no idea what its called.
  9. Hello all! I am mounting an Explore Scientific 8x50 Right Angle Erect Image Illuminated Finder Scope on my Skywatcher Dobsonian. The original Skywatcher mount only had one bolt hole. The Explore Scientific base requires two bolts. I was told to make sure to have the primary mirror cover in place and to place a cotton sock over the secondary mirror. My concern is drilling into the tube itself. Are there any other precautions I need to take so that that it doesn’t look like it was drilled by a bunch of Wallys? LoL! Greg
  10. Anyone fancy a punt on this 10" dobsonian. Needs TLC but cheap. No connection with seller of course. https://www.gumtree.com/p/telescopes/10-dobsonian-reflector-telescope-custom-built/1308162351
  11. Hi stargazers! I don't have a DSLR, but I have expensive mirrorless camera so I need wide lens on top of the eyepiece. I need at least 65 degree fov. I did research but I still didn't find anything good. Luminous Thank you in advance!
  12. Hi all, as mentioned in a previous post I have a national Geographic 76/350 compact telescope, it maybe not the best telescope in the world..but it’s at least something I can use while I save up for a good one. However I Seem to have a problem with the secondary mirror it gets easily out of place. For example when Its center I move the telescope to look at an object but it doesn’t stay in the center and it rotates to to which side I have moved the scope. I have a feeling that this is because it’s not colimated properly ( or at all) when I got this scope as a gift the box didn’t really come with clear instructions so have been putting it off but wanted to use it now. I’m hoping it’s an easy fix. If it does need collimating I’m hoping some of you will give me some tips on how to do it. I have taken some pictures to make it clearer on what I’m trying to say. I’ve taken two photos with the scope pointing up and the seconds mirror is center (ish) and one when it’s pointed st something and the secondary mirror has moved. I’m sorry if this sounds a stupid question but need to double check. Also apologies if the pictures aren’t clear.
  13. I’ve noticed on some Dobsonian Telescopes there is a FAN mounted to the bottom of the mirror. I don’t understand why you would put one there. On mine I made a 12V Warmer that runs off the power supply for the frost problem I was having in the winter air at night with the humidity. A fan would be used to Cool the glass, but I’ve not experienced a scenario where I’d need one. But al would also say that after all these years of looking up. I caught my first Daylight moon today.
  14. I currently have a Celestron Powerseeker 127 and am obviously finding it hard to see DSO's (Andromeda and M13 looks like a grey smudge). I was looking at buying a 10inch Dob, but was wondering if Andromeda and M13 would still look like a grey smudge, but just a bigger one. Also, I was worried about nudging a dob at 400x magnification, would the object just shoot out of view? Any advise on this would be great.
  15. Skywatcher 200p dobsonian telescope along with base. The telescope comes with 25mm plossl only (not in picture) It has been kept in good condition though the primary has caught some dust over time that could do with a bit of cleaning. The tube has some marks when it was loaded onto Heq5 for Astro imaging. If you want I can sell the dovetail and rings for that purpose along with the telescope at additional £49 if you wish to mount it on EQ platform. Also included is a degree circle manually erected (some numbers need re-writting over) at the bottom to help you find objects based on alt/az using your phone which makes it a manual goto. Price: £1̶6̶9̶ now £99 Reason for price drop: I have removed the finderscope and fitted it into my C8 as I have an adapter for guide camera so this is now listed without a finderscope at below bargain price for a quick sale! Collection from Manchester only.
  16. Hello stargazers, I've been stalking this forum for a good couple months now in my search for a telescope. My main focus will be the visual observing of planets and DSOs. I like photography might plan that later if possible (i'd like it to be). The skies where i live is somewhat polluted but not so much. I can easily spot most constellations with the naked eye if my drive my car on a hill outside the city. I was thinking about one of the models below. I'd like the get the best bang for the buck and minimize the risk of being disappointed and then wanting a more expensive tube later on. I'd like to learn the sky by heart thus steering clear of a GOTO for now. I'm not going to buy anything right now because I'm putting some hard earned cash in a pair of binos first. My options: (but I'm open to any and all suggestions!) Skywatcher Skymax 150 PRO €569.37 + Skywatcher EQ5 Deluxe €269.02 Objective Lens Diameter: 150mm Telescope Focal Length: 1800mm (f/12) EQ5 because it's a good stable mount that I basically can keep using if I ever upgrade the OTA Skywatcher Skyliner 250PX Dobsonian €463.49 Diameter of Primary Mirror: 254mm Telescope Focal Length: 1200mm (f/4.7) Celestron Omni XLT 127 €647.16 Objective Lens Diameter: 127mm Telescope Focal Length: 1250 mm (f/10) Skywatcher Skymax 127 OTA €274.42 + Skywatcher EQ5 Deluxe €269.02 (Or EQ3-2 for €442.96) Diameter of Primary Mirror: 127mm Telescope Focal Length: 1500mm (f/11.81) I might also get the less stable EQ3-2 for a 100 euros less. But again, the EQ5 is a good investment I believe Skywatcher Explorer 200P EQ5 €504.55 Diameter of Primary Mirror: 200mm Telescope Focal Length: 1000mm (f/5) I got all the prices from FLO. Some questions that I still have: (thanks for staying with me so long) - Would you be able to see some DSOs with anything up from f/10? - Is a dew shield necessary if i live in the Netherlands? - I know its been asked a lot but what eyepieces would you recommend? FLO recommend BSTs. Then again which lengths? I thinks thats all for now:) Thanks so much for checking this post out. Clear skies to you all!
  17. Its a long time since Sept 2008 when I sold my SE8 and all my kit. Just about to join the Light Bucket Dob brigade. Like the Orion 10 xi 10" and f 4.7..... and keep looking at Skywatcher...10-12". 10 might be good enough for me at 69 years old. (Still feel 25). I know I will hate the ep's that come with the Orion... I do fancy it... so what EP,s will go well with an f4.7 10"Dob. I had a Mk 2 Hyperion zoom but one post and a site which I cant remember (69 so forgive me) and they recommend it for more than f5. EP,s on a pension plan replies please. Thanks in advance
  18. Hi All, My Skyliner 200p OTA will fit in my car, but the Skywatcher mount that came with it will not. Are there any foldaway Dob mounts out there? Or any diy projects? Ta, Neil.
  19. Was just thinking.. If the total diffraction depends upon the thickness of the spiders' vanes, then wouldn't it be a good idea to sharpen the spider? Bit like a double edged knife, all four or three vanes... any ideas or experiences with this?
  20. Is it possible to mount an 8inch (200P) flextube scope to an HEQ5 mount, or is the flextubing going to get in the way?
  21. I've been asked on a number of occasions, how I managed to do planet astrophotography with a manual Dobsonian telescope. So I have created a tutorial, to help fellow owners create a worthy image. I hope it makes sense and you find it useful. Dob AP Tutorial.pdf
  22. Hi, Looking for a 12" DOB (or larger) which can be transported to Prestwick, Ayrshire. Any brand, as long as the telescope is optically sound and in good working order. I'm a reliable buyer who has bought and sold on this site before. Thanks, Mark
  23. I need a a really accurate,easy to use collimating tool. I have a used laser collimator but it does not fit snugly in the focuser so I feel it’s not very accurate. The idea of collimating causes me some anxiety anyway, so accurate and easy is the key! Can any of you offer any suggestions to help me out?
  24. Hi, After a lot of research I purchased my first advanced telescope a 12inch Orion SkyQuest Open Truss Dobsonian. Being into astronomy for years now this is the first gaint telescope I am using. Today was first light and I was rather confused as to what I was seeing. Comparing my tiny 4inch view of Jupiter with the view from this 12inch; it was nearly similar! So the question is which eyepieces should I use to get better detail? I have a 28mm, 32mm, 15mm, 6mm etc. and a Baader zooming hyperion. I viewed Jupiter from both the telescopes using a 32mm wide angle eyepiece. This is probably a really rookie question so go soft on me Which eyepieces and of which make should I attach to fully utilize the capability of this telescope? I tried the Baader and the 15mm and the 32mm for seeing Jupiter tonight. Any help would be highly HIGHLY appreciated. Clear Skies, Div
  25. Hi.I was thinking of buying one of the above.but what my issue is are they fitted into the 2"part of the focuser using the screws .I get that you rotate the part to lock the eyepieces. so how do you know it's central.???.
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